Nykaa — Nykaa skincare not being delivered but Nykaa claiming it has delivered

I placed an order on Nykaa few days back regarding some skincare from mama earth. It was a prepaid order for which I had already paid for. The estimated delivery date was on 11th of June but I did not receive the delivery. Despite of this, the app says that my order has been delivered which is utter lies. Upon reaching out to them, they sent me a proof of delivery which was a forged signature who’s initials didn’t even match my name. That is just so unacceptable and unethical. I have read numerous stories about similar issues with Nykaa. Nykaa either refund my money back or send me my order again at the earliest or I will have to take matters to legal levels.